CVE-2020-3490 : What You Need to Know
Learn about CVE-2020-3490, a path traversal vulnerability in Cisco Vision Dynamic Signage Director, allowing unauthorized access to sensitive files. Find mitigation steps and long-term security practices here.
A vulnerability in the web-based management interface of Cisco Vision Dynamic Signage Director could allow an authenticated, remote attacker with administrative privileges to conduct directory traversal attacks and obtain read access to sensitive files on an affected system.
Understanding CVE-2020-3490
This CVE involves a path traversal vulnerability in Cisco Vision Dynamic Signage Director, potentially enabling unauthorized access to sensitive files.
What is CVE-2020-3490?
The vulnerability allows an authenticated attacker with administrative privileges to exploit the web-based management interface, leading to directory traversal attacks and unauthorized access to critical system files.
The Impact of CVE-2020-3490
- CVSS Base Score: 4.9 (Medium Severity)
- Confidentiality Impact: High
- Privileges Required: High
- Successful exploitation could grant the attacker root privileges to read files on the underlying operating system.
Technical Details of CVE-2020-3490
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The flaw arises from inadequate validation of user input in the web-based management interface, allowing attackers to send crafted HTTP requests with directory traversal sequences.
Affected Systems and Versions
- Affected Product: Cisco Vision Dynamic Signage Director
- Affected Version: Not applicable
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- User Interaction: None
- Scope: Unchanged
- The attacker needs administrative privileges on the system to exploit the vulnerability.
Mitigation and Prevention
Protecting systems from CVE-2020-3490 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-supplied patches or updates promptly.
- Restrict access to the web-based management interface.
- Monitor network traffic for suspicious activities.
Long-Term Security Practices
- Regularly update and patch software to address vulnerabilities.
- Implement the principle of least privilege to limit user access rights.
- Conduct security training for staff to recognize and respond to potential threats.
Patching and Updates
- Cisco may release security advisories with patches to address the vulnerability.
- Stay informed about security updates and apply them as soon as they are available.